Question

what is the use of an electroscope?
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Answer 1

an instrument used to detect the presence of electric charge on a body.

Answer 2

Answer:

Explanation:

Electroscope is a simple tester for working with static electricity. There’s a pair of metal leads running vertically from the top of a metal can to the inside which has a clear window to see the ends of the leads. Some poor sap who maintains the lab sticks a stamp-sized piece of gold leaf on each on each lead end so the lower 2/3 of it is hanging free. The window allows you to see the 2 pieces but shelters them from any puff of wind because the gold foil is very delicate because it’s excruciatingly thin, relatively heavy and soft. If you work up a static electricity charge on a day with low humidity and touch the charge onto both leads (on the outside of the can) the two pieces of foil will jump apart, almost forming a horizontal line, clearly demonstrating that opposite charges repel each other. If you slowly bleed off the charge the gold foil pieces will slowly relax and droop down forming an upsidedown V at first and then eventually just 2 vertical lines side by side. So it can show charge. The gold foil pieces don’t last long however. They either get broken off because the charge was so great that they were torn apart or someone couldn’t resist opening up the can and seeing what happenned if they touched the foil (it pretty much disappears, it’s so soft and thin).